"Leopold IV, Prince of Lippe (Leopold Julius Bernhard Adalbert Otto Karl Gustav; 30 May 1871 – 30 December 1949) was the final sovereign of the Principality ...
[Read more]
of Lippe. Succeeding to the throne in 1905 he had been governing the state since 1904 as regent." - (en.wikipedia.org 12.08.2020)